xaotikos wrote:Thanks! I have already the touring screen but I cannot say I'm pretty happy. However it feels better than stock for me (181cm sth like 5'11" i think).
Did you get the 6319H model? I really like the looks and I think might work better.

kevxtx wrote:I have been looking into getting my ride smoother in the low end & to spread the HP & Torque a bit more over the rev range, the answer is to run 2 different velocity stack heights, at the moment I am running the rear cylinder with the standard stack & the front cylinder with an RC8 stack, the results are a smoother motor all round & a motor that likes to rev a bit more up top. My theory behind it all is the rear cylinder fires with the STD stack producing good Torque then a few degrees later the front cylinder fires using the RC8 stack which is better for HP. Motorcycle motors have been using different length intakes for many years now but I have not found any info on our 990s using different length intakes so I decided to explore this avenue, anyway just sharing what I am up to at the moment.

I have tried quite a few combinations.
Lowered RC8 on STD stacks both cylinders = Lots of Torque

kevxtx wrote:Thanks for your feedback, for the past few months I have been running with the EPC on as I can not feel the power difference with it off which I mentioned in the early days when I first disabled it, the results with it enabled are it does smoothen the bike out even more below 2500rpm & does help with that chain slap a bit, so give it a try EPC ON.

Normally I would Dyno test a mod like the 2 different stack combination before releasing the info but with the results I got I could feel the difference straight away & wanted other riders opions as anyone could carry out the stack combination mod, I will only be back on the dyno in a month or two & could not keep this info to myself, so I am very interested to see what other riders have to say about running a standard stack on the rear cylinder & a RC8 stack on the front cylinder?

Kev,

I turned EPC on & noticed much less chain slap. Least mount there's ever been. I do have a 43t rear on order & will put the 17t front back on at that time to see differnce.

So what's the consensus on this approach? I have a JC30-80 on its way and plan to visit a tuner for a custom map. Should I go ahead order an RC8 stack for the front cylinder?

Definitely best mod for the money I have done
Kevs a genius and should be in the ktm r&d department in my opinion
Even after my custom map this still made a big difference I wouldn't hesitate for 1 second if you have the tank off do it!
Cheers
Paul

My SMT got 690 Duked over the weekend with a 2012 new head light, custom decals to arrive this week from the UK. The only modification need to the head light was to cut a hole into the back of the mask to allow the ignition switch to poke through, then make up 4 x brackets to mount the head light. I also used a 2009 gloss black 990SM front mud guard.

Thanks again to the guys at Eurotek http://www.eurotekktm.com/ where I get most of my KTM parts from with super fast delivery times.

kevxtx wrote:Not sure mate we will have to see, I will be very surprised if the production version has 180hp, I just can't see an extra 25hp over the RC8 from an extra 100cc, from past experience an extra 100cc will give you around 8-10 extra rear wheel HP.

That proto type ran with no air box so it would receive max air flow with big intake noise, with Euro 4 & 5 emission controls it would not allow the intake noise level of the bike, so an air box would be needed & with every bend the air takes trying to reduce the intake noise it will slow the intake air speed down & the HP will go down.

where can I order the DNA 3 airbox from, how many HP will it add compared to removing the SAS?

That price is not quite as scary as it looks - I think it includes a 23% VAT.
Check for a distributor near you. I found buying off a local agent to be a bit cheaper, maybe DNA trying to help distributors?
I bought mine off these guys earlier this year at a good saving. http://www.kenma.com.au/